NCIt Definition: A disorder characterized by the presence of persistent and recurrent irrational thoughts (obsessions), resulting in marked anxiety and repetitive excessive behaviors (compulsions) as a way to try to decrease that anxiety.

MEDLINEPLUS Definition:

Obsessive-compulsive disorder (OCD) is a type of anxiety disorder. If you have OCD, you have frequent, upsetting thoughts called obsessions. To try to control the thoughts, you feel an overwhelming urge to repeat certain rituals or behaviors. These are called compulsions.

Examples of obsessions are a fear of germs or a fear of being hurt. Compulsions include washing your hands, counting, checking on things, or cleaning. With OCD, the thoughts and rituals cause distress and get in the way of your daily life.

Researchers think brain circuits may not work properly in people who have OCD. It tends to run in families. The symptoms often begin in children or teens. Treatments include therapy, medicines, or both. One type of therapy, cognitive behavioral therapy, is useful for treating OCD.

NIH: National Institute of Mental Health

NCI-GLOSS Definition: An anxiety disorder in which a person has intrusive ideas, thoughts, or images that occur repeatedly, and in which he or she feels driven to perform certain behaviors over and over again. For example, a person may worry all the time about germs and so will wash his or her hands over and over again. Having an obsessive-compulsive disorder may cause a person to have trouble carrying out daily activities.

CSP Definition: anxiety disorder characterized by recurrent, persistent obsessions or compulsions: obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant; compulsions are repetitive and seemingly purposeful behavior which the individual generally recognizes as senseless and from which the individual does not derive pleasure although it may provide a release from tension.

MSH Definition: An anxiety disorder characterized by recurrent, persistent obsessions or compulsions. Obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant. Compulsions are repetitive and seemingly purposeful behavior which the individual generally recognizes as senseless and from which the individual does not derive pleasure although it may provide a release from tension.

81; was NEUROSES, OBSESSIVE-COMPULSIVE 1963-80; OBSESSION was see under NEUROSES, OBSESSIVE-COMPULSIVE 1963-78

MSH

IAN

DEFAULT

ICD10

ICE

Anancastic neurosis; Compulsive neurosis; Obsessional phobia [any]

ICD9CM

INCLUSION_TERM

anankastic neurosis

ICD10

INCLUSION_TERM

obsessive-compulsive neurosis

ICD10

MDA

19990101

MSH

MESH_DEFINITION

An anxiety disorder characterized by recurrent, persistent obsessions or compulsions. Obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant. Compulsions are repetitive and seemingly purposeful behavior which the individual generally recognizes as senseless and from which the individual does not derive pleasure although it may provide a release from tension.

A type of psychoneurosis characterized by disturbing, unwanted, anxiety-provoking, intruding thoughts or ideas, and repetitive impulses to perform acts (ceremonials, counting, hand-washing) that may be considered abnormal, undesirable, or distasteful to the patient. (CRpd1989, 493)